Home / 638,767.55-881,276.60-409,451.28

Finding the Fourth Proportional to 638,767.55, 881,276.60 and 409,451.28

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Solution

The fourth proportional to 638,767.55, 881,276.60 and 409,451.28 is: 564,900.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,767.55 : 881,276.60 = 409,451.28 : x
  2. Step 2: Convert to fraction form
    638,767.55/881,276.60 = 409,451.28/x
  3. Step 3: Cross multiply
    638,767.55x = 881,276.60 × 409,451.28
  4. Step 4: Simplify right side
    638,767.55x = 360,839,825,450.41
  5. Step 5: Solve for x
    x = 360,839,825,450.41/638,767.55
  6. Step 6: Final answer
    x = 564,900.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.